Self-adaptive PLC (Programmable Logic Controller) general control sliding formwork system for mid-partition wall of ultra-deep large-diameter ventilating shaft

Abstract

The utility model discloses a self-adaptive PLC (Programmable Logic Controller) general control slip form system for a mid-partition wall of an ultra-deep large-diameter ventilating shaft. The self-adaptive PLC general control slip form system comprises a touch control, a stroke digital display and an oil pressure digital display, wherein the touch control can realize single-top fine adjustment, multi-top synchronous jacking or multi-top synchronous descending through a wellhead jacking jack and PLC general control; through a transverse oil cylinder in a well and mechanical control, self-adaptive adjustments such as formwork correction, formwork anchoring during concrete pouring and slip-up deviation prevention in the formwork slip-up process are achieved, and touch control, stroke digital display and oil pressure digital display are achieved through PLC general control. The device can be applied to an ultra-deep large-diameter ventilation shaft, and compared with traditional formwork overturning and climbing construction, the difficulty of aerial work in the shaft is lowered, the number of operators is reduced, working efficiency is improved, and construction safety risks are reduced.

Description

Technical Field

[0001] The utility model belongs to the sliding form construction control technology of ultra-thin middle partition wall of ultra-deep large-diameter ventilation shaft in highway, railway or municipal tunnel, specifically, it is an adaptive PLC master control sliding form system of middle partition wall of ultra-deep large-diameter ventilation shaft. Background Art

[0002] When constructing ultra-deep and large-diameter ventilation shafts, if conventional flipping and climbing forms are used to cast the middle partition wall, high-altitude operations in the shaft are difficult and risky. If part of the work is moved to the shaft mouth and the degree of mechanization and automation is improved as much as possible, the number of workers in the shaft, the working time, and the safety risks of the work can be significantly reduced, which reflects the people-oriented approach. Summary of the invention

[0003] The purpose of the utility model is to provide an adaptive PLC master-controlled sliding formwork system for partition walls in ultra-deep and large-diameter ventilation shafts in response to the deficiencies in the above-mentioned prior art, including ① touch control, stroke digital display, and oil pressure digital display that can achieve single-top fine adjustment, multi-top synchronous lifting, or multi-top synchronous descent through wellhead lifting jack + PLC master control; ② adaptive adjustment such as formwork correction, formwork anchoring during concrete pouring, and formwork sliding process anti-biasing can be achieved through the horizontal oil cylinder and mechanical control in the well, and touch control, stroke digital display, and oil pressure digital display can be achieved through PLC master control. The utility model can be applied to ultra-deep and large-diameter ventilation shafts. Compared with traditional flip mold and climbing mold construction, it reduces the difficulty of high-altitude operations in the shaft and the number of operators, improves work efficiency, and reduces construction safety risks.

[0004] The utility model is implemented through the following technical scheme: an adaptive PLC master-controlled sliding formwork system for a partition wall in an ultra-deep large-diameter ventilation shaft, which is composed of three major sections: a PLC master-control system, an in-well template system and a wellhead lifting system. The in-well template system includes a template, a supporting truss, a casting operation platform and a transverse cylinder. The wellhead lifting system includes a supporting beam, a lifting beam, a lifting hydraulic cylinder and a precision-rolled threaded steel hanger. The template is arranged on both sides of the partition wall in the shaft, the supporting truss is installed between the shaft wall and the template, the casting operation platform and the transverse cylinder are installed on the supporting truss, a supporting beam is arranged above the template, a lifting beam is arranged above the supporting beam, the template, the supporting beam and the lifting beam are connected by a precision-rolled threaded steel hanger, and a lifting hydraulic cylinder is arranged between the supporting beam and the lifting beam.

[0005] Furthermore, the jacking hydraulic cylinder and the lateral hydraulic cylinder are respectively provided with a piston displacement sensor and a cylinder pressure sensor, and the piston displacement sensor and the cylinder pressure sensor are connected to a PLC controller in a PLC master control system.

[0006] Furthermore, the formwork is a concrete formwork, which is cast through circulation lifting.

[0007] Furthermore, a template suspension safety rope is also provided on the template.

[0008] Furthermore, a health-care operation platform is also provided on the supporting truss.

[0009] The beneficial effect of the utility model is that it realizes the overall control of the wellhead for the lifting and dynamic correction of the slipform, the correction of the formwork after the slipform is lifted, and the anchoring of the formwork during the slipform casting, which basically meets the technical problems to be solved, reduces the difficulty and operation risk of the partition wall casting operation in the vertical shaft of the ultra-deep large-diameter tunnel, and reduces the expected number of workers in the well. In the future, satellite positioning, laser scanning and other technologies will continue to be used to strengthen the PLC master control in terms of lifting amount setting and timing management, and continuously improve the degree of construction automation. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a plan view of the sliding mold assembly of the utility model;

[0011] Figure 2 The utility model is a construction operation flow chart.

[0012] In the figure: 1-lifting hydraulic cylinder, 2-lateral hydraulic cylinder, 3-PLC controller, 4-support beam, 5-lifting beam, 6-fine-rolled threaded steel hanger, 7-casting operation platform, 8-formwork, 9-support truss, 10-shaft middle partition wall, 11-shaft wall, 12-health operation platform, 13-hydraulic station, 14-formwork suspension safety rope. DETAILED DESCRIPTION

[0013] In order to make the purpose, technical solution and beneficial effects of the patent of the utility model clearer, the preferred implementation of the utility model will be described in detail below in conjunction with the accompanying drawings to facilitate the understanding of technical personnel.

[0014] As attached Figure 1As shown, this embodiment is based on a highway project with a super-long tunnel ventilation shaft with a depth of 319 meters and a diameter of 8 meters. It is an ultra-deep and large-diameter ventilation shaft, and realizes the partition wall slipform construction in the shaft wellhead master control. It consists of three major sections: a PLC master control system, an in-well template system, and a wellhead lifting system. The in-well template system includes a template 8, a supporting truss 9, a casting operation platform 7, and a transverse cylinder 2. The wellhead lifting system includes a supporting beam 4, a lifting beam 5, a lifting hydraulic cylinder 1, and a fine-rolled threaded steel hanger 6. The template 8 is cast on both sides of the partition wall 10 in the shaft. The supporting truss 9 is installed between the shaft wall 11 and the template 8. The casting operation platform 7 and the transverse cylinder 2 are installed on the supporting truss 9. A supporting beam 4 is arranged above the template 8, and a lifting beam 5 is arranged above the supporting beam 4. The template 8, the supporting beam 4, and the lifting beam 5 are connected by a fine-rolled threaded steel hanger 6, and a lifting hydraulic cylinder 1 is arranged between the supporting beam 4 and the lifting beam 5. The PLC master control system includes a touch screen, a control box and a manual valve. A template suspension safety rope 14 is also provided on the template 8, the hydraulic cylinder is connected to the hydraulic station 13, and a health-care operation platform 12 is also provided on the support truss 9.

[0015] The lifting hydraulic cylinder 1 and the lateral hydraulic cylinder 2 are respectively provided with piston displacement sensors and cylinder pressure sensors. The PLC master control system is connected to the PLC controller 3 through the pressure sensors of the lifting hydraulic cylinder and the lateral hydraulic cylinder and the cylinder piston displacement sensors, realizing digital display of oil pressure, lifting amount and lateral adjustment amount. Thus, intelligent control of vertical lifting and lateral adjustment of the template is realized, and the manual valve is used as a backup control means.

[0016] The formwork system in the well uses a 1.25-meter-high formwork, with the first pouring of 1.25 meters and subsequent lifting of 0.7 meters to achieve cyclic lifting and pouring; the slipform pouring operation platform is a work platform for workers to vibrate concrete, slide and then implement the middle partition wall concrete covering and curing. The supporting trusses and transverse cylinders realize the functions of strengthening the middle partition wall formwork, adjusting and positioning the transverse pouring, and preventing the longitudinal lifting from deflection.

[0017] Wellhead lifting system: When the template 8 is stationary, the template system is suspended through the supporting beam 4, and the precision-rolled threaded steel hanger 6 transmits force; when the template 8 is lifted, it is lifted by the hydraulic lifting cylinder 1, and the PLC master control system numerically controls the support beam 4 from the static state, and converts it into the lifting beam 5 to hang the template system. After it is lifted into place (the sliding form is lifted into place), it is converted into the support beam 4 to bear the weight (oil return from the lifting cylinder).

[0018] During construction, the construction process is as follows: Figure 2 As shown, the following steps are included:

[0019] (1) Assembly and debugging of the template system outside the well;

[0020] (2) Assembly and debugging of the lifting system outside the well;

[0021] (3) Installation of steel bars for partition walls in the shaft;

[0022] (4) Installation of formwork system into the well;

[0023] (5) Installation of lifting system at wellhead;

[0024] (6) Joint debugging of the sliding formwork assembly (formwork system + lifting system + PLC control system);

[0025] (7) Calibration of the partition wall template in the shaft and tightening of the horizontal cylinder;

[0026] (8) Full pouring of the 1.25m first section of the middle partition wall;

[0027] (9) The horizontal cylinder is relaxed, the PLC intelligently controls the sliding membrane as a whole, and the lifting is stable by 70CM;

[0028] (10) Formwork calibration, horizontal cylinder tightening, pouring 70CM concrete;

[0029] (11) Repeat the process of extending the steel bars, lifting the formwork, and pouring concrete every 70 cm each time.

[0030] Finally, it should be noted that the above preferred embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that various changes can be made in form and details without departing from the scope defined by the claims of the utility model.

Claims

1. An adaptive PLC master control sliding form system for partition walls in ultra-deep and large-diameter ventilation shafts, characterized in that: The invention is composed of three major sections, namely, a PLC master control system, an in-well template system and a wellhead lifting system. The in-well template system comprises a template (8), a supporting truss (9), a casting operation platform (7) and a transverse hydraulic cylinder (2). The wellhead lifting system comprises a supporting crossbeam (4), a lifting crossbeam (5), a lifting hydraulic cylinder (1) and a fine-rolled threaded steel hanger (6). The template (8) is arranged on both sides of a partition wall (10) in a vertical shaft. The supporting truss (9) is installed between the shaft wall (11) and the template (8). The casting operation platform (7) and the transverse hydraulic cylinder (2) are installed on the supporting truss (9). A supporting crossbeam (4) is arranged above the template (8). A lifting crossbeam (5) is arranged above the supporting crossbeam (4). The template (8), the supporting crossbeam (4) and the lifting crossbeam (5) are connected by a fine-rolled threaded steel hanger (6). A lifting hydraulic cylinder (1) is arranged between the supporting crossbeam (4) and the lifting crossbeam (5).

2. The self-adaptive PLC master control sliding mode system for partition walls in ultra-deep large-diameter ventilation shafts according to claim 1 is characterized in that: The lifting hydraulic cylinder (1) and the lateral hydraulic cylinder (2) are respectively provided with a piston displacement sensor and a cylinder pressure sensor, and the piston displacement sensor and the cylinder pressure sensor are connected to a PLC controller (3) in a PLC master control system.

3. The self-adaptive PLC master control sliding form system for partition walls in ultra-deep large-diameter ventilation shafts according to claim 1 is characterized in that: The template (8) is a concrete template, which is cast by circulating lifting.

4. The self-adaptive PLC master control sliding form system for partition walls in ultra-deep large-diameter ventilation shafts according to claim 1 is characterized in that: The template (8) is also provided with a template suspension safety rope (14).

5. The self-adaptive PLC master control sliding form system for partition walls in ultra-deep large-diameter ventilation shafts according to claim 1 is characterized in that: A health-preserving operation platform (12) is also provided on the supporting truss (9).

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